Expired Canadian patentCanada
Thermoplastic moulding composition and mouldings of polycarbonate, having improved ease of mould release when injection moulding
CA 918838 A · Owner: Farbenfabriken Bayer Aktiengesellschaft · Inventors: Gunter Peilstocker; Hermann Schirmer
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 9, 1973. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 1990.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 9, 1973
Term endedJanuary 9, 1990
Patent numberCA 918838 A
Classification (IPC)C08K5/10 +1 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.